Fixed Exchange Rate System Quiz: Currency Stability

In a fixed exchange rate system, a government or central bank officially sets the value of its currency at a predetermined rate against another currency, such as the US dollar, or a basket of currencies. The central bank is then committed to intervening in the foreign exchange market to keep the rate at that level, buying or selling its own currency as needed.

The answer is False. In a fixed exchange rate system, the currency's value is set by a government or central bank decision, not by market forces. The central bank actively intervenes by buying or selling foreign currency to maintain the official rate. This is the defining difference from a floating exchange rate system, where supply and demand freely determine the currency's value in the market.

One of the main benefits of a fixed exchange rate is the predictability it provides for importers, exporters, and foreign investors. When the exchange rate is stable and known in advance, businesses can accurately forecast the cost of imports and the revenue from exports. This reduces currency risk and encourages more cross-border trade and long-term investment compared to a volatile floating rate environment.

A fixed exchange rate requires an official rate-setting decision, ongoing central bank intervention to hold the currency at that level, and sufficient reserve holdings to finance those interventions. Automatic adjustment without government action is a feature of floating exchange rate systems, not fixed ones. Under a fixed rate, imbalances must be corrected through policy action rather than through exchange rate movements.

The answer is False. While a fixed exchange rate reduces exchange rate uncertainty, it introduces other risks. Countries must maintain large foreign exchange reserves to defend the peg, which is costly. If the fixed rate becomes misaligned with economic fundamentals, it can create trade imbalances and financial vulnerabilities. Countries are also exposed to speculative attacks when markets doubt the government's ability to maintain the peg at the official rate.

Developing countries often adopt fixed exchange rates to import monetary credibility by tying their currency to a trusted one such as the US dollar or euro. This can reduce inflation expectations, stabilize import prices, and signal commitment to sound economic management. A stable exchange rate also reduces the currency risk that deters foreign investors, helping attract the capital needed for economic development.

The Bretton Woods system, established in 1944, created an international fixed exchange rate framework in which participating countries pegged their currencies to the US dollar, and the dollar was convertible to gold at a fixed price. It provided global exchange rate stability after World War Two until it collapsed in 1971 when the US ended dollar-gold convertibility, leading to the widespread adoption of floating exchange rates.

The answer is True. A currency board is one of the strictest forms of a fixed exchange rate commitment. The monetary authority is legally required to hold foreign exchange reserves equal to the full value of the domestic currency in circulation. This means the central bank cannot create money beyond what is fully backed by reserves, removing all monetary policy discretion and making the peg extremely credible and difficult to break.

Fixed exchange rate systems come with significant drawbacks. The currency cannot depreciate to improve trade competitiveness. Reserve accumulation for intervention is costly and ties up resources. If the peg is set above equilibrium, the currency becomes overvalued, hurting exporters. The final option describes rapid adjustment, which is a feature of floating rates. Under a fixed rate, the inability to adjust creates pressure rather than instability from over-adjustment.

Saudi Arabia is a widely cited example of a long-running and successful currency peg. The Saudi riyal has been fixed to the US dollar since the 1980s. The peg has been sustainable because oil export revenues provide a steady supply of US dollars, giving Saudi Arabia the foreign exchange reserves needed to maintain the fixed rate without requiring frequent intervention under stress.

The answer is True. When a country fixes its exchange rate, it gives up the ability to depreciate its currency to improve competitiveness. If it runs a BoP deficit, it must instead rely on internal adjustment, which means reducing domestic prices, wages, and spending to restore competitiveness and reduce import demand. This internal adjustment is often more painful than allowing the exchange rate to move, which is a key criticism of fixed rate systems.

A fixed exchange rate involves maintaining a specific set currency value through active and committed central bank intervention. A managed or dirty float sits between fixed and freely floating systems, allowing the exchange rate to move with market forces but permitting the central bank to intervene periodically to prevent excessive volatility or misalignment. The key difference is the level of commitment and frequency of intervention required.

Sustainability of a fixed rate depends on having the reserves to defend it, setting it near the equilibrium rate to minimize pressure, and maintaining similar inflation to the anchor currency to prevent competitiveness from eroding. Persistent current account deficits are a threat to sustainability, not a supportive condition, because they deplete the reserves needed to maintain the peg and can trigger speculative attacks.

To prevent its currency from depreciating, a central bank buys domestic currency using its foreign exchange reserves. This removes domestic currency from circulation, reducing the money supply. The tightening of the money supply tends to raise interest rates, which can attract capital inflows and help support the exchange rate. However, it can also slow economic growth, creating a trade-off between defending the peg and maintaining domestic economic activity.

The answer is True. This is one of the most important constraints of a fixed exchange rate. To maintain the peg, a country must keep its interest rates in line with those of the anchor currency country. If it raises rates independently to fight inflation or lowers them to stimulate growth, capital flows triggered by the rate differential can undermine the peg. This loss of monetary independence is a fundamental cost of choosing a fixed exchange rate system.